Merged revisions 286756 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r286756 | mnicholson | 2010-09-14 14:26:18 -0500 (Tue, 14 Sep 2010) | 13 lines
  
  Don't clear the username from a realtime database when a registration expires.
  
  Non-realtime chan_sip does not clear the username from memory when a registration expiries so realtime probably shouldn't either.
  
  (closes issue #17551)
  Reported by: ricardolandim
  Patches:
        reg-expiry-username-1.4-fix1.diff uploaded by mnicholson (license 96)
        reg-expiry-username-1.6.2-fix1.diff uploaded by mnicholson (license 96)
        reg-expiry-username-1.8-fix1.diff uploaded by mnicholson (license 96)
        reg-expiry-username-trunk-fix1.diff uploaded by mnicholson (license 96)
  Tested by: ricardolandim, mnicholson
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@286757 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -12126,7 +12126,7 @@ static void destroy_association(struct sip_peer *peer)
 
 	if (!sip_cfg.ignore_regexpire) {
 		if (peer->rt_fromcontact && sip_cfg.peer_rtupdate) {
-			ast_update_realtime(tablename, "name", peer->name, "fullcontact", "", "ipaddr", "", "port", "", "regseconds", "0", peer->deprecated_username ? "username" : "defaultuser", "", "regserver", "", "useragent", "", "lastms", "", SENTINEL);
+			ast_update_realtime(tablename, "name", peer->name, "fullcontact", "", "ipaddr", "", "port", "", "regseconds", "0", "regserver", "", "useragent", "", "lastms", "", SENTINEL);
 		} else {
 			ast_db_del("SIP/Registry", peer->name);
 		}